According to a study conducted by the University of Helsinki, it’s morally OK to have sexual relations with robots … as long as you’re single.

Mika Koverola from the Finland-based university recently put out two surveys which queried groups of 172 and 260 people respectively. Those in each group were asked about their relationship background, science fiction and morality.

The study’s participants were then asked to consider two scenes which saw a man walking into a brothel that had human beings or machines.

What resulted was those surveyed stated they were more likely to be OK with people who paid for sex with robots as long as they haven’t tied the knot. The study also suggested that those who were more sexually mature were open to going to a brothel, whether it had robots or human prostitutes.

“The more you start thinking about it as something that could compete against or interfere with your relationships, that seems to be what people morally object to,” study co-author and Tufts University research associate Tom Arnold said in an interview with The New Scientist.

Arnold noted study participants considered robots as just another sex toy for personal gratification.